. Bulletin. Natural history; Natural history. November, 1961 Smith : Amphibians and Reptiles of Illinois 81 23 specimens) to (average ) (average ) per cent of body length; per cent of body length. head length (for 12 specimens), to In a series of 20 specimens from the (average ) per cent of body length. Shawnee Hills, the tibia length is to Geographic variation in P. t. feriarum. Fig. 67.—An adult Pseiidacris triseriata feriarum from Saline County, Illinois. The ground- color is tan, gray, or light reddish brown ; the weak dorsal stripes or spots are u
. Bulletin. Natural history; Natural history. November, 1961 Smith : Amphibians and Reptiles of Illinois 81 23 specimens) to (average ) (average ) per cent of body length; per cent of body length. head length (for 12 specimens), to In a series of 20 specimens from the (average ) per cent of body length. Shawnee Hills, the tibia length is to Geographic variation in P. t. feriarum. Fig. 67.—An adult Pseiidacris triseriata feriarum from Saline County, Illinois. The ground- color is tan, gray, or light reddish brown ; the weak dorsal stripes or spots are usually dark brown. Table 20.—Geographic variation in tibia length to body length ratios of Illinois Pseiidacris triseriata feriarum X triseriata intergrades. Figures in parentheses are numbers of specimens. Characteristic Jackson- Saline Counties (16) Jefferson- Wabash Counties (16) Rich LA vn County .,48) Clark- Crawford Counties (4) Range Mean Range Mean Range Mean Range Mean Tibia length as per- centage of body length Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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